Boat anchor



M 9, 1935. G. E. STUBBS 2,007,667

BOAT ANCHOR Filed April 18, 1935 Patented July 9, 1935 UNITED STAT Es PATENT OlfFlCE 1 'IBOAT ANCHOR George lildwin Stubbs,.Mia mi, Fla.

'Application April is, 1933, SerialNo. 666,706

' gfo aimsl (01114-208) My invention relates to improvements in boat anchors, and has for its object the production of a releasing boat anchor, built in parts so that its shank will appear'and operate as one unit,

5 just the same as an anchor of the'common type having a one piece shank,and can be released from an obstruction when one'orthe other of the fiukes are-fouled on the bottom of a body a of water, and of 7 such construction the danger of loss to'a vessel is reduced to a minimum.

In the accompanying drawing,

Figs. 1 and 4 are perspective assembly viewsof my improved anchor. 7 Figs. 2 and 3 are respectively side and edge views ofthe auxiliary shank portion according to the invention. r Fig. 5 is a detail view-of thestock portion according to the invention? f Numerals l'l l'l-theidraw'in'g indicate" the controlling shank bar's; 5 the crown, 2 the auxiliary-shank, 12 its groove between twin tongues, M the head and I3 its tongue and shoulders; 6-6 the independent pivoted arms; (-1 the ilukes, 8--8 the fins, of an anchor constructed in accordance with my invention. a V

'Ihe'auxiliary shank 2 and the crown 5 are preferably made for this anchor 'in one piece, although the crownis not necessary when the shank is applied to other types such as the navy or similar anchors. The crown 5 is made for this anchor of a width and thickness to allow the connection of stock I central of its width, and depth below the pivot bolt, and is shaped on either end to form a stop for independently pivoted arms 66. Also to receive and hold said arms in position by pivot bolt H] to allow free movement of said arms to engage the bottom in the regular manner and to fold against shank for non-fouling when in use and for stowing when not in use as an anchor. The head I4 is constructed with pivot studs cast integral with head in its lower end at the intersection of the tongue for strength at this pointof construction and are threaded to receive nuts Ill-l9 for a purpose to be presently described.

The controlling shank bars ll-l1 are preferably made for the anchor shank in two straight flat bars, pivotally secured attheir lower end by a suitable pivot bolt IE, to allow free movement and pivotally secured at their top or head end by pivot studs l5-l5 threaded to receive nuts l9l9 to be set tight against controlling shank bars |ll'l on each side of head M to retard the movement of head 14 from turning on its pivot only to the angle of the pull under a heavy strain during its functions as an anchor the sameas an anchor of the common type with a one-piece solid shank. It will be noticed the twin tongues formin the groove l2, at the upper end of aux-1 iliary shank 2, engages the tongue 13 in the lower end of the head l4 close up tothe lower extreme of the pivot studs l5-l5,,an'd the upper extremity of the tongue I3, or on a line with projecting 'shouldersbetween the two. This construction as can be readily seen will reduce the; leverage strain to smallest minimum possible, and when the head M is turned on its pivot at about right angles to the controlling shank Il--l I, thereby preventing the auxiliary shank. 2 from passing between controlling shank bars l'l-l1, without one or the other of the twin tongues on the upper end of the auxiliary shank 2 striking thelower downward projecting shoulder when the head M is turned on its pivot at right angles to the controlling shankbars lL-l 'l, after once being released from an "obstruction from one side or the other, the head will remain in its right angle position because the pressure applied by nuts I9-I9 against controlling shank bars ll--l l retards the turning of head M on its pivot. When the tide changes the anchor will turn over and its opposite arm and fluke will contact the bottom, and the. surging of the vessel on cable will cause the head [4 to turn on its pivot and resume its normal parallel position, and the tongue I3 in lower end of head M will gear in the groove between twin tongues on the upper end of the auxiliary shank 2, and hold the auxiliary shank 2 captive, central between and parallel with the controlling shank bars lll'l, and the head I4, and appear and operate as an anchor with a one-piece shank.

At any time a fluke is fouled on an obstruction, the anchor shank will continue to perform as an anchor with a one-piece shank until it is desired to leave the moorings. A vessel can be moved to the opposite direction and the surge of the vessel on anchor cable will turn the head i l at right angles to the controlling shank bars I'l--I! and release the auxiliary shank 2 from its captivity with head and allow the controlling shank l'll'l to turn'on its pivot thru about are as illustrated in dotted line position in Fig. 4 and stop against theupper fluke. This position will place the controlling shank ll'll in line 50 with the points of both fiukes 'll and the fouled fluke can be released or drawn out from the obstruction as it entered'and the vessel can proceed without loss or inconvenience. It will be noticed the strain will always be at an angle de- 55 fined by the relative position of the fluke engaged with the bottom and the upper pivot studs |5l5. Under stress the head M can only turn to the angle of the pull, and the tongue I 3 in lower end of head l4 geared in the groove 12 between twin tongues in the upper end of auxiliary shank 2 will hold the auxiliary shank captive centrally between controlling shank bars and the shank will perform as one unit. When the anchor is fouled the scope of cable is unchanged and the vessel is moved in the opposite direction thus swinging elements I! to the dotted line position Fig. 4 and freeing the anchor. It will be further noticed in casting that this anchor will always fall on the bottom in a closed position with both the fiukes 1-1 against the shank and when the vessel sets back on the anchor cable,

the upper arm 6 will still he against shank and be non-fouling. The under fin 8 will cause the under arm 6 to open automatically and the under fluke 1 will engage the bottom automatically in the regular manner, while the entire shank continues to remain as one unit. The upper arm 6 will continue to lie against the shank, until the tide changes, when the shank will be drawn to the opposite direction as one unit, and the stock I will cause the anchor to turn over on its Opposite fin 8 and arm 6 and repeat the above operation. This operation will continue to repeat as long as a fluke is not fouled and the shank will continueto perform as an anchor with the commonly used solid shank.

The stock I is provided with a bronze stud in one half, and the other half bored and taped to receive the other half of said stud, to connect stock in crown and to facilitate detaching stock for stowing when not in use as an anchor. The stock I operates to cause one or the other of the arms 6 to take position and its fin 8 will cause one or the other of the flukes to engage the bottom automatically in the regular manner.

The anchor herein described is of simple and cheap construction, and while fulfilling all the requirements of a boat anchor having a one-piece solid shank, has also the capability of being freed from an obstruction on the bottom, thereby re ducing the chances of loss to a minimum.

Other features of this anchor are: The entire shank is free from obstructions and is non-fouling; it will haul in hawsepipe on vessels out of the way; the upper arms and flukes are non-foul.- ing as they always lie against shank'when the lower fluke engages the bottom in the regular manner; and the device is neat in appearance, and inexpensive in the replacement of parts.

Having described my invention, what I claim and desire to secure by Letters Patent is:

1. An anchor comprising a shank made of two parallel parts, a member pivoted to one end of each of said shank parts adapted for connection to an anchor chain, an auxiliary shank having a crown at one end, said auxiliary shank being pivoted adjacent said crown between said shank partsand at the other end of said shank parts from that to which said anchor attachment member is attached, the end of said auxiliary shank opposite said crown being swingable between said shank parts and adapted to cooperate with an; end of said member, a pair of arms having flukesthereon independently pivoted to said crown and extending in opposite directions and having fins thereon adjacent said pivots to independently swing said arms whereby said flukes engage the bottom, said fins cooperating with said crown to limit the outwardly pivotal movement of said arms, whereby said anchor functions substantial- 1y as and for the purpose set forth.

2. An anchor as set forth in claim 1 wherein a stock is provided for said crown extending on either side of said crown and at right angles to said fiukes and auxiliary shank.

'GEORGE EDWIN STUBBS. 

